I like the look of vacuum-fluorescent displays (VFDs) -- a high-contrast display with a black background, solid color areas. Enough brightness to cause some haloing spilling over into the blackness if you were looking at it. Led to a particular design style adapted to the technology, was very "high-tech" in maybe the 1980s.

OLEDs have high contrast, and I suppose you could probably replicate the look, but I doubt that the style will come back.

https://en.wikipedia.org/wiki/Vacuum_fluorescent_display

EDIT: A few more car dashboards using similar style:

https://s3.amazonaws.com/skillshare/uploads/session/tmp/50c99738

https://www.pinterest.com/hudsandguis/retro-car-dashboards/

And some concept cars with similar dash:

https://www.hudsandguis.com/home/2022/retro-digital-dashboards

Some other devices using VFDs:

https://i.ytimg.com/vi/PkPSDOjhxwM/maxresdefault.jpg

https://ae01.alicdn.com/kf/HTB1_TIdcGmWBuNkHFJHq6yatVXaZ/LINK1-VFD-Music-Audio-Spectrum-Indicator-Audio-VU-Meter-Amplifier-Board-Level-Precision-Clock-Adjustable-AGC.jpg

In the near to mid future, I think an answer to this question are Internal Combustion Engines. I love electric vehicles and look forward to the tech improving. But the sheer coolness factor of moving a large machine through perfectly timed and calibrated explosions is tough to beat.

Clothing and towels made with asbestos fabric. During the middle ages you could clean them by throwing them in the fire and they would come out clean. Eventually your lungs would give up on you but for a while you had a very cool way to impress your guests.

CDs and DVDs, because ownership beats convenience when you can get them second hand for pennies on the pound

Steam locomotives. The crazy streamlining, the size of some of those motherfuckers. 6 foot tall wheels, 100 tons moving at 125mph and all that shit accomplished 80+ years ago

https://en.m.wikipedia.org/wiki/LNER_Class_A4_4468_Mallard

Disney lost their old camera tech used to make a "yellow screen" with sodium vapor lights.

It's actually better than a green screen because the yellow light is so specific that even if you remove that particular frequency of light, everything else still looks fine. You can do all sorts of things that would normally be very difficult to pull off with any of our green screen tech (like drinking water in a clear bottle or wearing a rainbow dress).

https://www.youtube.com/watch?v=UQuIVsNzqDk

I love that about CRTs, man.

How the fuck could we invent a tiny pocket sized particle accelerator electron beam gun that magnetically aimed its fire with such precision as to hit every individual phosphor, with the appropriate charge to make the right color, across an entire fucking screen, and do that 30+ times a second (for TV, or 60+ for a monitor)..

Yet the LCD is the high tech fancy monitor when its just a little grid of globs being electronically fired? How did the CRT get invented before the LCD?!

Bicycle shifters.

The first iteration that could be operated without stopping was the Campagnolo Cambio Corsa.
To shift, you had to reach behind you, where there were 2 levers.

The first one loosened the rear axle so it could move freely back and forth in the dropouts.
The second one had an eyelet you could use to move the chain sideways.
You put the chain on a different cog, and the rear wheel jumped forward or back due to the changed chain length.
Then you tightened the rear axle again.

It's terrifyingly beautiful: